Final answer:
The Marquis de Lafayette was the young, wealthy French soldier who offered his assistance to George Washington during the American Revolutionary War. His contributions reflected the important French support that was crucial in America's battle for independence.
Step-by-step explanation:
The young, wealthy French soldier who came to America to help George Washington and the Continental Army was the Marquis de Lafayette. He arrived in America in 1777, and his support was not just personal, but also symbolic of the vital French aid that contributed to the American victory in the Revolutionary War. The French provided the United States with gunpowder, money, soldiers, and naval forces, which were crucial in defeating Great Britain.
Lafayette became a close confidant of Washington, serving as his aide-de-camp. His leadership and dedication exemplified the international support that was instrumental to the American cause. Moreover, Lafayette's involvement was celebrated posthumously, as evident in the famous phrase, “Lafayette, we are here!”, spoken by Colonel Charles E. Stanton at Lafayette's tomb, signaling the ongoing American gratitude for his contribution.